Espansion-bolt.



No. 683,082. Patentad Sept. 24,1901. J. c. SUMMEREB.

EXPANSION BOLT.

(Applicnion filed June 80,1900.)

(No Model.)

I QAA AaAAAA W v y I v I m WITNESSES gEA/TOH WWW M1810 z J 9% G 1MAN'ORNFYJ Nrrnn STATES PATENT V OFFICE. 9

JOHN C. SUMMERER, OF CLEVELAND, OHIO.

EXPANSION-BOLT.

SPECIFICATION forming part of Letters Patent No. 683,082, datedSeptember 24, 1901.

Application filed June 30, 1900. Serial No. 22,233. (No model.)

To aZZ whom it may concern:

Be it known that 1, JOHN G. SUMMERER, a resident of Cleveland, in thecounty of Guyahoga and State of Ohio, have invented certain new anduseful Improvements in Expansion-Bolts; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

My invention relates to improvements in expansion-bolts or fasteningdevices for attaching sign-boards, beams, and other objects to the wallof a building and necessitating only the making of a holewithin theouter portion of the wall for the reception of the bolt or fasteningdevice.

The object of this invention is to provide a fastening device of thecharacter indicated that is simple and durable in construction, that canbe applied with facility, and that is exceedingly reliable in itsoperation.

In the accompanying drawings, Figure I is a sectional view of a wallprovided with a hole or aperture into which my improved expansion-bolthas been introduced, and in this figure the bolt is shown in centrallongitudinal section. Fig. II is a transverse vertical section on eitherline II II, Fig. I, looking inwardly. Fig. III is a sectional viewcorresponding with Fig. 1, except that in Fig. III the expansible collaror shell of the fastening device is shown expanded and a signboard isshown in dotted lines. Fig. IV is a transverse vertical section oneither line IV IV, Fig. III, looking inwardly. Fig. V is an inner endelevation of the forward shell-expanding sleeve, and Fig. VI is a sideelevation of the same. Fig. VII is a side elevation of the forwardexpansible shell or collar, and Fig. VIII is an outer end elevation ofthe same. Fig. IX is an inner end elevation of the rear expansible shellor collar, and Fig. X is a side elevation of the same. Fig. XI is a sideelevation of the rear shell-expanding sleeve, and Fig. XII is an outerend elevation of the same.

Referring to the drawings, a designates a wall of cement, stone, orbrick that is provided within the outer side thereof with an aperture orhole a, that in the case illustrated is open at the outer side of thewall.

ally enlarged diametrically,

adapted to be expanded by the sleeve 0, a

sleeve h, loosely mounted upon the bolts shank forward of the sleeve 0,an expansible collar or shell Z, composed of lead or other compressibleandudisplaceable material embracing and adapted to be expanded thesleeve h, and a nutf, that is mounted upon the inner end of the threadedportion of the T bolts shank between the plain portion of the shank andthe forward sleeve h. rounding wall of the bore of the shell 2 flarestoward the inner end of the shell,and said shell is cylindricalexternally.

The shell 6 is provided externally with a plurality of ribs 2,preferably four in number, that are arranged at suitable intervalsciroumferentially of the shell and extend longitudlnally and preferablyfrom end to end of.

the shell. The bore of the shell e is graduas already indicated, in thedirection of the free end of the bolts shank, and the surrounding wallof the said bore is provided with a plurality of grooves or channels 3,that are preferably V- shaped in end elevation and arranged at suitableintervals circumferentially of the bolt The fasten- The surand extendinglongitudinally of and preferably from end to end of the shell. The ribs2 and the grooves 3 of the shell e preferably alternate, as shown veryclearly in Fig. IX, wherein the ribs 2 and the grooves 3 are arrangedexternally and internally, respectively, of the shell and alternately atequal intervals around the shell.

The nut-forming sleeve 0 is gradually reduced. diametrically in thedirection of the head of the bolt and extends normally into thediametrically larger end'of the bore of the shell e,as shown in Fig. I.The sleeve 0 is provided upon its external surface with as many angularor V-shaped ribs or tongues 5 as there are grooves 3 formed in the shelle, and the tongues 5 are preferably enlarged in thickness in thedirection of the diametrically larger end of the said sleeve 0. The ribsor tongues 5 are arranged, therefore, at equal intervalscircmnferentially of the sleeve 0 and extend longitudinally of thesleeve and normally engage the grooves 3 of the shell 6, as shown inFigs. I and II.

The surrounding wall of the bore of the shell Z flares toward the outerend of the shell, and said shell is cylindrical externally. The shellZcorresponds in construction to the shell 6 already described; but theshells c and Z are reversely arranged. The shell Z is providedexternally, therefore, with a plurality of ribs 2, preferably four innumber, that are arranged at equal intervals circumferentially of theshell and extend longitudinally and from end to end of the shell. Thebore of the shell Z is gradually enlarged diametrically, as alreadyindicated, in the direction of the head of the bolt, and the surroundingwall of the said here is provided with four grooves or channels 3, thatare V-shaped in end elevation and arranged at equal intervalscircumferentially of the bolt and extending longitudinally of and fromend of end of the shell. The ribs 2 and the grooves 3 of the shell Zalternate, as shown very clearly in Fig VIII, wherein the ribs 2 and thegroove'sh are arranged 'extcrh'aiiy"'ahd' 'iiiternally, respec- Tively,of the shell and alternately at equal intervals around the shell.

The sleeve h is gradually reduced diametrically in the direction awayfrom the head of the bolt and extends normally into the diametricallylarger end of the bore of the shell Z, as shown in Fig. I. The sleeve his provided upon its external surface with as many angular or V-shapedribs or tongues 5 as there are grooves 3 formed in the shell Z, and thesaid tongues 5 are preferably enlarged in thickness in the direction ofthe diametrically larger end of the said sleeve h. The ribspr tongues 5are arranged, therefore aaqual intervals circumferentially of the sleeveh and extend longitudinally of the sleeve and normally engage thegrooves 3 of the shell Z, as shown in Figs. I and II.

The hole a, that is made in the wall a for the reception of theexpansion-bolt, is just large enough to require force in theintroduction of the device into the said hole-that is, theexpansion-bolt must be driven into the hole a, so as to cause the ribs 2upon the shells e and Z to become partially embedded within thesurrounding wall of the hole during the said introduction of the deviceinto the said hole. The shell Z has its inner end engaging the outer endof the shell e and prevents outwardly endwise displacement of the shelle in the direction of the head of the bolt during the introduction ofthe device into the hole a and during the expansion of the said shell 6subsequently. The nut f prevents outwardly-endwise displacement of thesleeve h during the introduction of the device into the hole 0. andduring the expansion of the shells e and Zsubsequently. The sleeve Itprevents outwardly-endwise displacement of the shell Z during theintroduction of the device into the hole ct, and the shell 6 preventsinwardlyendwise displacement of the shell Z during the introduction ofthe device into the hole a and during the subsequent expansion of thesaid shell Z. Obviously the embedding of the ribs 2 within thesurrounding wall of the hole a prevents the turning of the shells e andZ circumferentially of the bolt during the operation of the nut-formingsleeve 0. The engagement of the ribs or tongues 5 of the said sleeve 0with the grooves 3 of the shell 6 prevents circumferential displacementof the said sleeve 0 independently of the shell e, and consequently thesleeve 0 is rendered stationary with the shell 6 so far as turning uponthe bolt is concerned. The engagement of the ribs or tongues 5 of thesleeve h with the grooves 3 of the shell Z prevents circumferentialdisplacement of the said sleeve h independently of the said shell Z, andconsequently the sleeve h is rendered stationary with the shell Z so faras turning upon the bolt is concerned.

' The operation of my improved expansionbolt is as follows: \Vhen theexpansion-bolt has been placed in position within the hole a, as shownin Figs. I an-eLlljthe thereupon turning of the bolt in the requireddirection will result in the actuation of the nut-forming sleeve 0outwardly-that is, in the direction of the head of the bolt-and therebycause the said sleeve to enter the shell estill farther and result in alateral expansion of the said shell in all directions circumferentiallyof the bolt and cause the ribs 2 of the shell to be still fartherembedded within the surrounding wall of the hole a and to cause theshell to conform to and tightly engage the said wall. The aforesaidturning of the bolt b will of course shift the said bolt inwardly, andthereby cause the nut f to force the sleeve 77, inwardly, so that thesaid sleeve h, simultaneously with the operation of the nut-formingsleeve 0, will enter the shell Z still farther and result in a lateralexpansion of the said shell Z circumferentiallyof the bolt and cause theribs 2 of the said shell to be still farther embedded Within thesurrounding wall of the hole a and to cause the said shell to conform toand tightly engage the said wall. The shells e and Zare shown expandedin Figs. III and IV. Obviously my improved expansionbolt, that comprisesthe two sleeves c and h and the sleeve-embracing shells e and Z, willoperate quickly and very positively, so that the shells will become veryfirmly fixed to the wall, so as to accommodate the unscrewing orwithdrawal of the bolt 1) preparatory to the placing in position of thesign-board or other object 8, (shown in dotted lines, Fig. III,) that isto be secured to the wall. When the shells ITO 6 and Z and the engagingsleeves c and h are fixed Within the hole ct, as hereinbefore described,the bolt 1), with the nutfupon it, is withdrawn from the hole byunscrewing the bolt from the nut-forming sleeve 0, Whereupon thesign-board or other object that is to be secured tothe wall is placed inposition, and thereupon the bolt is passed through the said object thatis provided with a hole for the reception of the bolt and againintroduced into the wall and screwed into the sleeve 0. The nutfis ofcourse removed from the bolt preparatory to the passage of the boltthrough the sign-board or object that is to be supported from the walland is returned to its former position upon the bolt, because thepresence of this nut upon the bolt upon returning the latter intoengagement with the sleeve nut a will positively prevent anyoutwardly-endwise displacement of the sleeve h.

WVhat I claim is- 1 A device of the character indicated, comprising abolt, two reversely-arranged sleeves c and h mounted upon the shank ofthe bolt and tapering externally and arranged with their smaller endsadjacent to each other, the

outer sleeve being loosely mounted upon the bolt and the inner sleevebeing screw-threaded internally so as to form a nut engaging threads ofthe bolts shank, an abutment upon the bolt at the larger end of thelooselymounted sleeve and arranged to prevent endwise displacement ofthesaid sleevein the direction of the head of the bolt, and two shells eand Zcomposed of displaceable material and embracing the nut-formingsleeve and the loosely-mounted sleeve, respectively, substantially asand for the purpose set forth.

2. A device of the characterindicated, comprising a belt 1), tworeversely arranged sleeves mounted upon the bolt and arranged with theirsmaller ends adjacent to each other, the sleeve next adjacent to thefree extremity of the shank being screw-threaded internally so as toform a nut engaging threads of the bolts shank, the other sleeve beingloosely mounted upon the shank, a nut f upon the bolts shank, at thelarger end of the looselymounted sleeve, and arranged to prevent endwisedisplacement of the said sleeve in the direction of the head of thebolt, two reversely-arranged expansible shells mounted upon thedifferent sleeves, respectively, and tapering internally, with thesmaller ends of their sleeve-engaging bores adjacent to each other,substantially as and for the purpose set forth.

3. A device of the character indicated, comprising a bolt b, tworeversely arranged sleeves mounted upon the bolt and arranged with theirsmaller ends adjacent to each other, the sleeve next adjacent to thefree extremity of the shank being screw-threaded internallysoastoformanutengagingthreads of thebolts shank, the other sleeve beingloosely mounted upon the shank, a nut f upon the bolts shank andpreventing endwise displacement of the lastmentioned or loosely-mountedsleeve in the direction ofthe head of the bolt,

tongues 5 formed upon and externally of each of the sleeves, theexpansible shells e and Z embracing the different sleeves, respectively,and provided each with externalribs 2 and internal grooves 3, allarranged and operat-- ing substantially as shown, for the purposespecified.

Signed by me at Cleveland, Ohio, this 14th day of April, 1900.

JOHN C. SUMMERER.

Witnesses:

O. H. Down, A. H. PARRATT.

